Method and mechanism for marking and finishing paper



Patented May l5, 1928. A l

UNITED STATES 1,669,885 PATENT OFFICE.

STUART W. WEBB, OF BROOXLINE, MASSACHUSETTS, AND ALBERT ALLEN, OF BAN- GOB, MAINE, ASSIGNORS TO EASTERN MANUFACTURING COMPANY, OF BOSTON, MASSACHUSETTS, vA CORPORATION OF MASSACHUSETTS.

METHOD Ann MECHANISM ron MARKING am) FINIsHING turna.,

Application led April 28,1926. Serial No. 105,124.

This invention relates to a method and mechanism for marking paper by which a mark closely simulatinga water mark can be made while the paper is having imparted thereto a finish such as the well known linen finish.

One method by Vwhich linen finish may be imparted to paper is disclosed in Patent No. 1,277,714 granted September 3, 1918, and while this invention is not limited thereto, it is particularly suitable 'for use in connection with that process.

The process as disclosed in -that 'patent comprises; in general, passing the paper interposed between a. pair of textile belts through the nip between a pair of rolls, one of which is softer than the other, these rolls being held together under heavy pressure. By the use of the relatively hard and soft rolls a slight slip between the paper to be -finished and the textile belts is produced, as 'fully described in that patent. this slip prilucing the desired polish of the paper.

According to the present invention the marking is effected by passing through the 'nip with the paper and belts a relatively thin pattern member cut to the form 0f the desired mark, it being found in practice that this member may well be formed of thin paper. AIt may be fixed to the surface of one of the rolls, to the surface of the belt, or between the plies of a multi-ply belt. In Order not to obliterate the fabric finish over the marked portions, the marking 'member should not contact directly with the paper to he marked, but should have at least one ply of the fabric between. though of course where no fabric finish is desired on the marked portion,- the marking member might be passed in direct contact with the paper toV be marked.

By this methodalso marking of quite different character from the usual water marks may be produced, if desired, by suitably forming the marking member. For eX- ample, paper perforated to produce ornamental designs of any desired character may be employed as a marking member the paper being marked then showing therein the design produced by the perforations, or if desired paper of variable thicknesses or a plurality of layers of paper having non-registering per'forations may be employed to further diversify the mark produced. Generally'. however. the total thickness of the marking member should not greatly exceed that of a fairly heavy paper. T he degree ot conspicuity of the niark may be regulated to some extent by the thickness of the marking member and also by its nearness to di- .rect contact with the paper to be marked.

For a more complete understanding of this invention reference mav be had to the accompanying drawings in which Figure lvrepresents a cross section through the hard and soft roll of a fabric finishing machine of the type disclosed in the patenthereinbefore referred to and showing the textile belts and paper passing through the nip between these rolls and illustrating one pttition of the marking members.

Figure 2 is a similar view showing an- 4other position of the marking members.

Figure 3 is a cross section through one of the rolls showing the marking members fixed thereto.

Referring rst toiFigure 1, 1 and 2 indicate respectively the soft'and hard rolls offl the continuous process linen finish machine..

The paper to be finished is indicated at 3 80 which passes between the fabric belts 4 and 5. As therein shown these fabric belts are 'fixed to the inner face of the belt 14 s that I they come into direct contact with the surface of the hard roll 12, all Vthe plies of the textile belt 14 coming between them and the paper 3 which is to be marked.

In Figure 3 one of the rolls only is shown at 2() and the marking members at 21 are fixed directly to its surface. This construction is similar in action to that shown in Figure 2 in that all the plies of the belt whichA are passed in contact with the roll are interposed between the marking element and paper to be marked. The thickness of 105 the marking members in these figures is considerably exaggerated in order that it may be shown, as a matter of fact best results being secured by the use of paper of not unusual thickness, `and while as shown the .members are relatively small pieces positioned at intervals they might colnprise more or less continuous sheets perforated with any desired pattern. It is usually better to have the marking member on the same side of the paper to be marked asis the harder roll.

Having thus described certain elnbodiments of this invention it shouldbe evident to those skilled in the art that various changes and modifications may be made therein without departing from its spirit or scope as defined by the appended claims.

rWe claim: l

1. The method of imparting a fabric finish to paper and marking the paper, which comprises subjecting the paper interposed between fabric layers together with a marking element to heavy pressure and Simultaneously effecting a4 slight slip between the paper and fabric,

2. The method of imparting a fabric finish to paper and marking the paper, which comprises passing the paper interposed between fabric layers and with a marking element through the nip between a pair Aof rolls, one of said rolls being softer than the other.

3. The method of imparting a fabric finish to paper and marking the paper, which comprises passing through the nip between a ish to paper and marking the paper, which comprises passing through the nip between a hard and a soft; roll the paper to be treated interposed between fabric layers and with paper cut to the desired marking spaced from the paper to be finished by a ply of one p of said layers.

5. A mechanism for finishinflr paper comprising a pair of layers of fzrbric between which the paper to be finished may be interposed, a pair of rolls one softer thanthe other through the nip between'which said layers of fabric pass, and a marking member constructed and arranged to be passed through said nip with said fabric layers and the paper to be finished.

6. A 'mechanism for finishing paper comprising a pair o f rolls one roll being harder than the other and through the nip between which the paper to be finished may be passed, and a marking member fixed to the periphery of one of said rolls.

In testimony lwhereof we have affixed our signatures.

STUART W. WEBB. ALBERT ALLEN. 

